波形钢腹板PC组合箱梁剪力滞效应影响因素分析  

Impact Factor Research on Shear Lag Effect of PC Composite Box-girders with Corrugated Steel Webs

作　　者：朱世峰[1] 舒志云 李成君[1] 

机构地区：[1]重庆交通大学,重庆400074 [2]江西省交通设计研究院有限责任公司,江西南昌330002

出　　处：《公路工程》2014年第3期267-270,共4页Highway Engineering

摘　　要：基于有限单元法结合桥梁通用有限元软件MIDAS/Civil和Midas FEA,计算分析了箱梁承托长度、顶板厚度、悬翼比以及横隔板的设置对波形钢腹板箱梁剪力滞的影响。结果表明:箱梁承托长度越大,剪力滞系数越小;顶板厚度越厚,剪力滞系数越小;悬翼比的改变对最大剪力滞系数影响不大,但增大悬翼比会使最小剪力滞系数降低;剪力滞系数随着箱梁内横隔板设置间距的减小而降低。Based on the FEM and FEA software such as MIDAS/civil and Midas FEA, the effect on the shear lag of box-girder with corrugated steel webs by some factors such as the support length of the box-girder, the thickness of the roof, the suspend ratio and the distance between the diaphragms were ana- lyzed. The results indicated that when the support length of the box-girder or the thickness of the roof are greater, the shear lag coefficient will be smaller; the suspend ratio has little influence on the sheer lag coefficient only can decrease the minimum factor by increasing it; by decreasing the distance between the diaphragms can reduce the shear lag coefficient.

关 键 词：剪力滞 波形钢腹板 PC组合箱梁 有限元 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]